Rumbling

Rumbling typically refers to a low, continuous vibration or shaking, often caused by natural or mechanical phenomena. In geology, it describes the deep, resonant vibrations produced by earthquakes, volcanic activity, or shifting tectonic plates. These vibrations can be felt as a trembling sensation and heard as a low roar, signaling underlying energy release. In other contexts, such as machinery, rumbling may result from imbalance or malfunction. Overall, it indicates movement or energy transfer within a system, serving as a physical cue that something is happening beneath the surface or within the environment.